The Colli-Tavarone Unit is characterized by a sequence of Jurassic ophiolites and related sedimentary cover ranging in age from Late Jurassic to Early Paleocene. The structural evolution consists of two main folding phases followed by later deformation events. The D1 phase is characterized by isoclinal similar folds related to non-coaxial deformation. The P/T conditions of the D1 phase have been estimated as 3-4 kbar and 250-350°C. The D2 phase is characterized by overturned parallel folds with a well-developed crenulation cleavage. These pre-Oligocene deformation phases have been related to underthrusting, coherent underplating and exhumation in the Western Tethys accretionary wedge

Tectonic history of an accreted sequence: the Colli-Tavarone Unit, Northern Apennine, Italy.

MARRONI, MICHELE;
1993-01-01

Abstract

The Colli-Tavarone Unit is characterized by a sequence of Jurassic ophiolites and related sedimentary cover ranging in age from Late Jurassic to Early Paleocene. The structural evolution consists of two main folding phases followed by later deformation events. The D1 phase is characterized by isoclinal similar folds related to non-coaxial deformation. The P/T conditions of the D1 phase have been estimated as 3-4 kbar and 250-350°C. The D2 phase is characterized by overturned parallel folds with a well-developed crenulation cleavage. These pre-Oligocene deformation phases have been related to underthrusting, coherent underplating and exhumation in the Western Tethys accretionary wedge
1993
Marroni, Michele; Meccheri, M.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/22054
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